Function gsl_sys::gsl_linalg_QRPT_lssolve

pub unsafe extern "C" fn gsl_linalg_QRPT_lssolve(
    QR: *const gsl_matrix, 
    tau: *const gsl_vector, 
    p: *const gsl_permutation, 
    b: *const gsl_vector, 
    x: *mut gsl_vector, 
    residual: *mut gsl_vector
) -> c_int

This is supported on crate feature v2_2 only.